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Proxmox Virtual Environment is an easy to use Open Source virtualization platform for running Virtual Appliances and Virtual Machines.

OpenStack OpenStack is a global collaboration of developers and cloud computing technologists producing the ubiquitous open source cloud computing platform for public and private clouds. The project aims to deliver solutions for all types of clouds by being simple to implement, massively scalable, and feature rich. The technology consists of a series of interrelated projects delivering various components for a cloud infrastructure solution.

Portable-VirtualBox is a free and open source software tool that lets you run any operating system from a usb stick without separate installation. It unpacks and adjusts the paths and configuration of VirtualBox so it will run portably. It will not support bridged networking through the virtualbox network adapter as it is not installed.

VMware vSphere Hypervisor ( based on ESXi ) is a free bare-metal hypervisor that virtualizes servers so you can consolidate your applications on less hardware.

Microsoft® Hyper-V™ Server 2008 R2 is a stand-alone product that provides a reliable and optimized virtualization solution enabling organizations to improve server utilization and reduce costs. With the addition of new features such as live migration and expanded processor and memory support for host systems, it allows organizations to consolidate workloads onto a single physical server and is a good solution for organizations who are consolidating servers as well as for development and test environments. »

XenServer is a turnkey open source virtualization solution that provides out-of-the box virtualization and cloud computing. XenServer includes the Xen Hypervisor, the enterprise ready XAPI toolstack and integrations for cloud, storage and networking solutions.

OpenVZ is container-based virtualization for Linux.

UCS Virtual Machine Manager (UVMM) is an easy-to-use and powerful administration tool for KVM. It virtualizes Microsoft Windows, Univention Corporate Server (UCS) and other Linux distributions by centrally providing all the functions for creating and managing virtual instances and hard drives on physical servers.

Danube Cloud is a cloud management software used for deploying, maintaining and automating cloud data centers and their processes.

Cloud based service with a ton of applications to install in minutes in your vm.